21782968

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1031}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 43344000

約数和(自身を除く): 21561032

約数列:

[1, 2, 4, 8, 19, 38, 76, 139, 152, 278, 556, 1031, 1112, 2062, 2641, 4124, 5282, 8248, 10564, 19589, 21128, 39178, 78356, 143309, 156712, 286618, 573236, 1146472, 2722871, 5445742, 10891484, 21782968]

約数ペア:

[(1, 21782968), (2, 10891484), (4, 5445742), (8, 2722871), (19, 1146472), (38, 573236), (76, 286618), (139, 156712), (152, 143309), (278, 78356), (556, 39178), (1031, 21128), (1112, 19589), (2062, 10564), (2641, 8248), (4124, 5282)]